/*
* Mesa 3-D graphics library
- * Version: 6.3
*
* Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
+ * Keith Whitwell <keithw@vmware.com>
*/
-#include "api_arrayelt.h"
-#include "glheader.h"
-#include "imports.h"
-#include "context.h"
-#include "macros.h"
-#include "mtypes.h"
-#include "dlist.h"
-#include "vtxfmt.h"
-
-#include "vbo_context.h"
-
+#include "main/glheader.h"
+#include "main/arrayobj.h"
+#include "main/api_arrayelt.h"
+#include "main/vtxfmt.h"
+#include "vbo_private.h"
+
+const GLubyte
+_vbo_attribute_alias_map[VP_MODE_MAX][VERT_ATTRIB_MAX] = {
+ /* VP_MODE_FF: */
+ {
+ VBO_ATTRIB_POS, /* VERT_ATTRIB_POS */
+ VBO_ATTRIB_NORMAL, /* VERT_ATTRIB_NORMAL */
+ VBO_ATTRIB_COLOR0, /* VERT_ATTRIB_COLOR0 */
+ VBO_ATTRIB_COLOR1, /* VERT_ATTRIB_COLOR1 */
+ VBO_ATTRIB_FOG, /* VERT_ATTRIB_FOG */
+ VBO_ATTRIB_COLOR_INDEX, /* VERT_ATTRIB_COLOR_INDEX */
+ VBO_ATTRIB_EDGEFLAG, /* VERT_ATTRIB_EDGEFLAG */
+ VBO_ATTRIB_TEX0, /* VERT_ATTRIB_TEX0 */
+ VBO_ATTRIB_TEX1, /* VERT_ATTRIB_TEX1 */
+ VBO_ATTRIB_TEX2, /* VERT_ATTRIB_TEX2 */
+ VBO_ATTRIB_TEX3, /* VERT_ATTRIB_TEX3 */
+ VBO_ATTRIB_TEX4, /* VERT_ATTRIB_TEX4 */
+ VBO_ATTRIB_TEX5, /* VERT_ATTRIB_TEX5 */
+ VBO_ATTRIB_TEX6, /* VERT_ATTRIB_TEX6 */
+ VBO_ATTRIB_TEX7, /* VERT_ATTRIB_TEX7 */
+ VBO_ATTRIB_POINT_SIZE, /* VERT_ATTRIB_POINT_SIZE */
+ VBO_ATTRIB_GENERIC0, /* VERT_ATTRIB_GENERIC0 */
+ VBO_ATTRIB_GENERIC1, /* VERT_ATTRIB_GENERIC1 */
+ VBO_ATTRIB_GENERIC2, /* VERT_ATTRIB_GENERIC2 */
+ VBO_ATTRIB_GENERIC3, /* VERT_ATTRIB_GENERIC3 */
+ VBO_ATTRIB_MAT_FRONT_AMBIENT, /* VERT_ATTRIB_GENERIC4 */
+ VBO_ATTRIB_MAT_BACK_AMBIENT, /* VERT_ATTRIB_GENERIC5 */
+ VBO_ATTRIB_MAT_FRONT_DIFFUSE, /* VERT_ATTRIB_GENERIC6 */
+ VBO_ATTRIB_MAT_BACK_DIFFUSE, /* VERT_ATTRIB_GENERIC7 */
+ VBO_ATTRIB_MAT_FRONT_SPECULAR, /* VERT_ATTRIB_GENERIC8 */
+ VBO_ATTRIB_MAT_BACK_SPECULAR, /* VERT_ATTRIB_GENERIC9 */
+ VBO_ATTRIB_MAT_FRONT_EMISSION, /* VERT_ATTRIB_GENERIC10 */
+ VBO_ATTRIB_MAT_BACK_EMISSION, /* VERT_ATTRIB_GENERIC11 */
+ VBO_ATTRIB_MAT_FRONT_SHININESS, /* VERT_ATTRIB_GENERIC12 */
+ VBO_ATTRIB_MAT_BACK_SHININESS, /* VERT_ATTRIB_GENERIC13 */
+ VBO_ATTRIB_MAT_FRONT_INDEXES, /* VERT_ATTRIB_GENERIC14 */
+ VBO_ATTRIB_MAT_BACK_INDEXES /* VERT_ATTRIB_GENERIC15 */
+ },
+
+ /* VP_MODE_SHADER: */
+ {
+ VBO_ATTRIB_POS, /* VERT_ATTRIB_POS */
+ VBO_ATTRIB_NORMAL, /* VERT_ATTRIB_NORMAL */
+ VBO_ATTRIB_COLOR0, /* VERT_ATTRIB_COLOR0 */
+ VBO_ATTRIB_COLOR1, /* VERT_ATTRIB_COLOR1 */
+ VBO_ATTRIB_FOG, /* VERT_ATTRIB_FOG */
+ VBO_ATTRIB_COLOR_INDEX, /* VERT_ATTRIB_COLOR_INDEX */
+ VBO_ATTRIB_EDGEFLAG, /* VERT_ATTRIB_EDGEFLAG */
+ VBO_ATTRIB_TEX0, /* VERT_ATTRIB_TEX0 */
+ VBO_ATTRIB_TEX1, /* VERT_ATTRIB_TEX1 */
+ VBO_ATTRIB_TEX2, /* VERT_ATTRIB_TEX2 */
+ VBO_ATTRIB_TEX3, /* VERT_ATTRIB_TEX3 */
+ VBO_ATTRIB_TEX4, /* VERT_ATTRIB_TEX4 */
+ VBO_ATTRIB_TEX5, /* VERT_ATTRIB_TEX5 */
+ VBO_ATTRIB_TEX6, /* VERT_ATTRIB_TEX6 */
+ VBO_ATTRIB_TEX7, /* VERT_ATTRIB_TEX7 */
+ VBO_ATTRIB_POINT_SIZE, /* VERT_ATTRIB_POINT_SIZE */
+ VBO_ATTRIB_GENERIC0, /* VERT_ATTRIB_GENERIC0 */
+ VBO_ATTRIB_GENERIC1, /* VERT_ATTRIB_GENERIC1 */
+ VBO_ATTRIB_GENERIC2, /* VERT_ATTRIB_GENERIC2 */
+ VBO_ATTRIB_GENERIC3, /* VERT_ATTRIB_GENERIC3 */
+ VBO_ATTRIB_GENERIC4, /* VERT_ATTRIB_GENERIC4 */
+ VBO_ATTRIB_GENERIC5, /* VERT_ATTRIB_GENERIC5 */
+ VBO_ATTRIB_GENERIC6, /* VERT_ATTRIB_GENERIC6 */
+ VBO_ATTRIB_GENERIC7, /* VERT_ATTRIB_GENERIC7 */
+ VBO_ATTRIB_GENERIC8, /* VERT_ATTRIB_GENERIC8 */
+ VBO_ATTRIB_GENERIC9, /* VERT_ATTRIB_GENERIC9 */
+ VBO_ATTRIB_GENERIC10, /* VERT_ATTRIB_GENERIC10 */
+ VBO_ATTRIB_GENERIC11, /* VERT_ATTRIB_GENERIC11 */
+ VBO_ATTRIB_GENERIC12, /* VERT_ATTRIB_GENERIC12 */
+ VBO_ATTRIB_GENERIC13, /* VERT_ATTRIB_GENERIC13 */
+ VBO_ATTRIB_GENERIC14, /* VERT_ATTRIB_GENERIC14 */
+ VBO_ATTRIB_GENERIC15 /* VERT_ATTRIB_GENERIC15 */
+ }
+};
-#define NR_LEGACY_ATTRIBS 16
-#define NR_GENERIC_ATTRIBS 16
-#define NR_MAT_ATTRIBS 12
-static void init_legacy_currval(GLcontext *ctx)
+void
+vbo_exec_init(struct gl_context *ctx, bool use_buffer_objects)
{
struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
- struct gl_client_array *arrays = exec->legacy_currval;
- GLuint i;
- memset(arrays, 0, sizeof(*arrays) * NR_LEGACY_ATTRIBS);
+ exec->ctx = ctx;
- /* Set up a constant (StrideB == 0) array for each current
- * attribute:
- */
- for (i = 0; i < NR_LEGACY_ATTRIBS; i++) {
- struct gl_client_array *cl = &arrays[i];
-
- switch (i) {
- case VBO_ATTRIB_EDGEFLAG:
- cl->Type = GL_UNSIGNED_BYTE;
- cl->Ptr = (const void *)&ctx->Current.EdgeFlag;
- break;
- case VBO_ATTRIB_INDEX:
- cl->Type = GL_FLOAT;
- cl->Ptr = (const void *)&ctx->Current.Index;
- break;
- default:
- cl->Type = GL_FLOAT;
- cl->Ptr = (const void *)ctx->Current.Attrib[i];
- break;
- }
+ vbo_exec_vtx_init(exec, use_buffer_objects);
- /* This will have to be determined at runtime:
- */
- cl->Size = 1;
- cl->Stride = 0;
- cl->StrideB = 0;
- cl->Enabled = 1;
- cl->BufferObj = ctx->Array.NullBufferObj;
- }
+ ctx->Driver.NeedFlush = 0;
+ ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
+
+ exec->eval.recalculate_maps = GL_TRUE;
}
-static void init_generic_currval(GLcontext *ctx)
+void vbo_exec_destroy( struct gl_context *ctx )
{
struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
- struct gl_client_array *arrays = exec->generic_currval;
- GLuint i;
-
- memset(arrays, 0, sizeof(*arrays) * NR_GENERIC_ATTRIBS);
-
- for (i = 0; i < NR_GENERIC_ATTRIBS; i++) {
- struct gl_client_array *cl = &arrays[i];
- /* This will have to be determined at runtime:
- */
- cl->Size = 1;
-
- cl->Type = GL_FLOAT;
- cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
- cl->Stride = 0;
- cl->StrideB = 0;
- cl->Enabled = 1;
- cl->BufferObj = ctx->Array.NullBufferObj;
- }
+ vbo_exec_vtx_destroy( exec );
}
-static void init_mat_currval(GLcontext *ctx)
+/**
+ * In some degenarate cases we can improve our ability to merge
+ * consecutive primitives. For example:
+ * glBegin(GL_LINE_STRIP);
+ * glVertex(1);
+ * glVertex(1);
+ * glEnd();
+ * glBegin(GL_LINE_STRIP);
+ * glVertex(1);
+ * glVertex(1);
+ * glEnd();
+ * Can be merged as a GL_LINES prim with four vertices.
+ *
+ * This function converts 2-vertex line strips/loops into GL_LINES, etc.
+ */
+void
+vbo_try_prim_conversion(struct _mesa_prim *p)
{
- struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
- struct gl_client_array *arrays = exec->mat_currval;
- GLuint i;
-
- memset(arrays, 0, sizeof(*arrays) * NR_GENERIC_ATTRIBS);
+ if (p->mode == GL_LINE_STRIP && p->count == 2) {
+ /* convert 2-vertex line strip to a separate line */
+ p->mode = GL_LINES;
+ }
+ else if ((p->mode == GL_TRIANGLE_STRIP || p->mode == GL_TRIANGLE_FAN)
+ && p->count == 3) {
+ /* convert 3-vertex tri strip or fan to a separate triangle */
+ p->mode = GL_TRIANGLES;
+ }
- /* Set up a constant (StrideB == 0) array for each current
- * attribute:
+ /* Note: we can't convert a 4-vertex quad strip to a separate quad
+ * because the vertex ordering is different. We'd have to muck
+ * around in the vertex data to make it work.
*/
- for (i = 0; i < NR_GENERIC_ATTRIBS; i++) {
- struct gl_client_array *cl = &arrays[i];
-
- /* Size is fixed for the material attributes, for others will
- * be determined at runtime:
- */
- switch (i - VERT_ATTRIB_GENERIC0) {
- case MAT_ATTRIB_FRONT_SHININESS:
- case MAT_ATTRIB_BACK_SHININESS:
- cl->Size = 1;
- break;
- case MAT_ATTRIB_FRONT_INDEXES:
- case MAT_ATTRIB_BACK_INDEXES:
- cl->Size = 3;
- break;
- default:
- cl->Size = 4;
- break;
- }
-
- if (i < MAT_ATTRIB_MAX)
- cl->Ptr = (const void *)ctx->Light.Material.Attrib[i];
- else
- cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
-
- cl->Type = GL_FLOAT;
- cl->Stride = 0;
- cl->StrideB = 0;
- cl->Enabled = 1;
- cl->BufferObj = ctx->Array.NullBufferObj;
- }
}
-void vbo_exec_init( GLcontext *ctx )
+/**
+ * Function for merging two subsequent glBegin/glEnd draws.
+ * Return true if p1 was concatenated onto p0 (to discard p1 in the caller).
+ */
+bool
+vbo_merge_draws(struct gl_context *ctx, bool in_dlist,
+ struct _mesa_prim *p0, const struct _mesa_prim *p1)
{
- struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+ /* The prim mode must match (ex: both GL_TRIANGLES) */
+ if (p0->mode != p1->mode)
+ return false;
- exec->ctx = ctx;
+ /* p1's vertices must come right after p0 */
+ if (p0->start + p0->count != p1->start)
+ return false;
- /* Initialize the arrayelt helper
+ /* This checks whether mode is equal to any line primitive type, taking
+ * advantage of the fact that primitives types go from 0 to 14.
*/
- if (!ctx->aelt_context &&
- !_ae_create_context( ctx ))
- return;
-
- vbo_exec_vtx_init( exec );
- vbo_exec_array_init( exec );
-
- init_legacy_currval( ctx );
- init_generic_currval( ctx );
- init_mat_currval( ctx );
-
- ctx->Driver.NeedFlush = 0;
- ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
- ctx->Driver.FlushVertices = vbo_exec_FlushVertices;
-
- exec->eval.recalculate_maps = 1;
-}
-
-
-void vbo_exec_destroy( GLcontext *ctx )
-{
- struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
+ if ((1 << p0->mode) &
+ ((1 << GL_LINES) |
+ (1 << GL_LINE_LOOP) |
+ (1 << GL_LINE_STRIP) |
+ (1 << GL_LINES_ADJACENCY) |
+ (1 << GL_LINE_STRIP_ADJACENCY))) {
+ /* "begin" resets the line stipple pattern during line stipple emulation
+ * in tnl.
+ *
+ * StippleFlag can be unknown when compiling a display list.
+ *
+ * Other uses of "begin" are internal to the vbo module, and in those
+ * cases, "begin" is not used after merging draws.
+ */
+ if (p1->begin == 1 && (in_dlist || ctx->Line.StippleFlag))
+ return false;
- if (ctx->aelt_context) {
- _ae_destroy_context( ctx );
- ctx->aelt_context = NULL;
+ /* _mesa_prim::end is irrelevant at this point and is only used
+ * before this function is called.
+ */
}
- vbo_exec_vtx_destroy( exec );
- vbo_exec_array_destroy( exec );
-}
-
-/* Really want to install these callbacks to a central facility to be
- * invoked according to the state flags. That will have to wait for a
- * mesa rework:
- */
-void vbo_exec_invalidate_state( GLcontext *ctx, GLuint new_state )
-{
- struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
-
- if (new_state & (_NEW_PROGRAM|_NEW_EVAL))
- exec->eval.recalculate_maps = 1;
+ assert(p0->basevertex == p1->basevertex);
+
+ switch (p0->mode) {
+ case GL_POINTS:
+ /* can always merge subsequent GL_POINTS primitives */
+ break;
+ /* check independent primitives with no extra vertices */
+ case GL_LINES:
+ if (p0->count % 2)
+ return false;
+ break;
+ case GL_TRIANGLES:
+ if (p0->count % 3)
+ return false;
+ break;
+ case GL_QUADS:
+ case GL_LINES_ADJACENCY:
+ if (p0->count % 4)
+ return false;
+ break;
+ case GL_TRIANGLES_ADJACENCY:
+ if (p0->count % 6)
+ return false;
+ break;
+ case GL_PATCHES:
+ /* "patch_vertices" can be unknown when compiling a display list. */
+ if (in_dlist ||
+ p0->count % ctx->TessCtrlProgram.patch_vertices)
+ return false;
+ break;
+ default:
+ return false;
+ }
- _ae_invalidate_state(ctx, new_state);
+ /* Merge draws. */
+ p0->count += p1->count;
+ p0->end = p1->end;
+ return true;
}
-
-void vbo_exec_wakeup( GLcontext *ctx )
+/**
+ * Copy zero, one or two vertices from the current vertex buffer into
+ * the temporary "copy" buffer.
+ * This is used when a single primitive overflows a vertex buffer and
+ * we need to continue the primitive in a new vertex buffer.
+ * The temporary "copy" buffer holds the vertices which need to get
+ * copied from the old buffer to the new one.
+ */
+unsigned
+vbo_copy_vertices(struct gl_context *ctx,
+ GLenum mode,
+ struct _mesa_prim *last_prim,
+ unsigned vertex_size,
+ bool in_dlist,
+ fi_type *dst,
+ const fi_type *src)
{
- struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
-
- ctx->Driver.FlushVertices = vbo_exec_FlushVertices;
- ctx->Driver.NeedFlush |= FLUSH_UPDATE_CURRENT;
-
- /* Hook our functions into exec and compile dispatch tables.
- */
- _mesa_install_exec_vtxfmt( ctx, &exec->vtxfmt );
+ const unsigned count = last_prim->count;
+ unsigned copy = 0;
+
+ switch (mode) {
+ case GL_POINTS:
+ return 0;
+ case GL_LINES:
+ copy = count % 2;
+ break;
+ case GL_TRIANGLES:
+ copy = count % 3;
+ break;
+ case GL_QUADS:
+ case GL_LINES_ADJACENCY:
+ copy = count % 4;
+ break;
+ case GL_TRIANGLES_ADJACENCY:
+ copy = count % 6;
+ break;
+ case GL_LINE_STRIP:
+ copy = MIN2(1, count);
+ break;
+ case GL_LINE_STRIP_ADJACENCY:
+ /* We need to copy 3 vertices, because:
+ * Last strip: ---o---o---x (last line)
+ * Next strip: x---o---o--- (next line)
+ */
+ copy = MIN2(3, count);
+ break;
+ case GL_PATCHES:
+ if (in_dlist) {
+ /* We don't know the value of GL_PATCH_VERTICES when compiling
+ * a display list.
+ *
+ * Fail an assertion in debug builds and use the value of 3
+ * in release builds, which is more likely than any other value.
+ */
+ assert(!"patch_vertices is unknown");
+ copy = count % 3;
+ } else {
+ copy = count % ctx->TessCtrlProgram.patch_vertices;
+ }
+ break;
+ case GL_LINE_LOOP:
+ if (!in_dlist && last_prim->begin == 0) {
+ /* We're dealing with the second or later section of a split/wrapped
+ * GL_LINE_LOOP. Since we're converting line loops to line strips,
+ * we've already incremented the last_prim->start counter by one to
+ * skip the 0th vertex in the loop. We need to undo that (effectively
+ * subtract one from last_prim->start) so that we copy the 0th vertex
+ * to the next vertex buffer.
+ */
+ assert(last_prim->start > 0);
+ src -= vertex_size;
+ }
+ /* fall-through */
+ case GL_TRIANGLE_FAN:
+ case GL_POLYGON:
+ if (count == 0) {
+ return 0;
+ } else if (count == 1) {
+ memcpy(dst, src + 0, vertex_size * sizeof(GLfloat));
+ return 1;
+ } else {
+ memcpy(dst, src + 0, vertex_size * sizeof(GLfloat));
+ memcpy(dst + vertex_size, src + (count - 1) * vertex_size,
+ vertex_size * sizeof(GLfloat));
+ return 2;
+ }
+ case GL_TRIANGLE_STRIP:
+ /* Draw an even number of triangles to keep front/back facing the same. */
+ last_prim->count -= count % 2;
+ /* fallthrough */
+ case GL_QUAD_STRIP:
+ if (count <= 1)
+ copy = count;
+ else
+ copy = 2 + (count % 2);
+ break;
+ case PRIM_OUTSIDE_BEGIN_END:
+ return 0;
+ case GL_TRIANGLE_STRIP_ADJACENCY:
+ /* TODO: Splitting tri strips with adjacency is too complicated. */
+ default:
+ unreachable("Unexpected primitive type");
+ return 0;
+ }
- /* Assume we haven't been getting state updates either:
- */
- vbo_exec_invalidate_state( ctx, ~0 );
+ memcpy(dst, src + (count - copy) * vertex_size,
+ copy * vertex_size * sizeof(GLfloat));
+ return copy;
}
-
-
-
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